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<div class="title">/data/users/hoss/faiss/IndexIVFFlat.cpp</div>  </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/**</span></div>
<div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * Copyright (c) Facebook, Inc. and its affiliates.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> * This source code is licensed under the MIT license found in the</span></div>
<div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div>
<div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment">// -*- c++ -*-</span></div>
<div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;</div>
<div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="preprocessor">#include &quot;IndexIVFFlat.h&quot;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;</div>
<div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div>
<div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#include &quot;utils.h&quot;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#include &quot;FaissAssert.h&quot;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#include &quot;IndexFlat.h&quot;</span></div>
<div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#include &quot;AuxIndexStructures.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div>
<div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="keyword">namespace </span>faiss {</div>
<div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;</div>
<div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="comment">/*****************************************</span></div>
<div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="comment"> * IndexIVFFlat implementation</span></div>
<div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="comment"> ******************************************/</span></div>
<div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;IndexIVFFlat::IndexIVFFlat (Index * quantizer,</div>
<div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;                            <span class="keywordtype">size_t</span> d, <span class="keywordtype">size_t</span> nlist, <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> metric):</div>
<div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    IndexIVF (quantizer, d, nlist, sizeof(float) * d, metric)</div>
<div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;{</div>
<div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;    code_size = <span class="keyword">sizeof</span>(float) * d;</div>
<div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;}</div>
<div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html#a5f7356766632d3ce2838f285aa6b8e76">   36</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a5f7356766632d3ce2838f285aa6b8e76">IndexIVFFlat::add_with_ids</a> (<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> * x, <span class="keyword">const</span> <span class="keywordtype">long</span> *xids)</div>
<div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;{</div>
<div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlat.html#aea729c3d8c70bdd93f8e413e834851a4">add_core</a> (n, x, xids, <span class="keyword">nullptr</span>);</div>
<div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;}</div>
<div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;</div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html#aea729c3d8c70bdd93f8e413e834851a4">   41</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#aea729c3d8c70bdd93f8e413e834851a4">IndexIVFFlat::add_core</a> (<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span> * x, <span class="keyword">const</span> <span class="keywordtype">long</span> *xids,</div>
<div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;                             <span class="keyword">const</span> <span class="keywordtype">long</span> *precomputed_idx)</div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;</div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;{</div>
<div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;    FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;    assert (<a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>);</div>
<div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;    FAISS_THROW_IF_NOT_MSG (!(<a class="code" href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">maintain_direct_map</a> &amp;&amp; xids),</div>
<div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;                            <span class="stringliteral">&quot;cannot have direct map and add with ids&quot;</span>);</div>
<div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">long</span> * idx;</div>
<div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;long&gt;</a> del;</div>
<div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;</div>
<div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;    <span class="keywordflow">if</span> (precomputed_idx) {</div>
<div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;        idx = precomputed_idx;</div>
<div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;    } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;        <span class="keywordtype">long</span> * idx0 = <span class="keyword">new</span> <span class="keywordtype">long</span> [n];</div>
<div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;        del.set (idx0);</div>
<div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <a class="code" href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">quantizer</a>-&gt;<a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a> (n, x, idx0);</div>
<div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        idx = idx0;</div>
<div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    }</div>
<div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="keywordtype">long</span> n_add = 0;</div>
<div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;        <span class="keywordtype">long</span> <span class="keywordtype">id</span> = xids ? xids[i] : <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> + i;</div>
<div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;        <span class="keywordtype">long</span> list_no = idx [i];</div>
<div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div>
<div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;        <span class="keywordflow">if</span> (list_no &lt; 0)</div>
<div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;            <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span> *xi = x + i * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
<div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        <span class="keywordtype">size_t</span> offset = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#acd3e36cc06fc49e02773e403a84dba95">add_entry</a> (</div>
<div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;              list_no, <span class="keywordtype">id</span>, (<span class="keyword">const</span> uint8_t*) xi);</div>
<div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;</div>
<div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;        <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">maintain_direct_map</a>)</div>
<div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;            direct_map.push_back (list_no &lt;&lt; 32 | offset);</div>
<div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;        n_add++;</div>
<div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;    }</div>
<div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;        printf(<span class="stringliteral">&quot;IndexIVFFlat::add_core: added %ld / %ld vectors\n&quot;</span>,</div>
<div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;               n_add, n);</div>
<div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;    }</div>
<div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> += n;</div>
<div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;}</div>
<div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html#a2c445db1ccbad852dad17e60e0fac950">   82</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a2c445db1ccbad852dad17e60e0fac950">IndexIVFFlat::encode_vectors</a>(<a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x,</div>
<div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;                                  <span class="keyword">const</span> <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> * <span class="comment">/* list_nos */</span>,</div>
<div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;                                  uint8_t * codes)<span class="keyword"> const</span></div>
<div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;    memcpy (codes, x, <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a> * n);</div>
<div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;}</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;</div>
<div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;</div>
<div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;</div>
<div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;</div>
<div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;<span class="keyword">template</span>&lt;MetricType metric, <span class="keywordtype">bool</span> store_pairs, <span class="keyword">class</span> C&gt;</div>
<div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;<span class="keyword">struct </span>IVFFlatScanner: <a class="code" href="structfaiss_1_1InvertedListScanner.html">InvertedListScanner</a> {</div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;</div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;    <span class="keywordtype">size_t</span> d;</div>
<div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;    IVFFlatScanner(<span class="keywordtype">size_t</span> d): d(d) {}</div>
<div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;</div>
<div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    <span class="keyword">const</span> <span class="keywordtype">float</span> *xi;</div>
<div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;    <span class="keywordtype">void</span> set_query (<span class="keyword">const</span> <span class="keywordtype">float</span> *query)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;        this-&gt;xi = query;</div>
<div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;    }</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;    idx_t list_no;</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;    <span class="keywordtype">void</span> set_list (idx_t list_no, <span class="keywordtype">float</span> <span class="comment">/* coarse_dis */</span>)<span class="keyword"> override </span>{</div>
<div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        this-&gt;list_no = list_no;</div>
<div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;    }</div>
<div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;</div>
<div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keywordtype">float</span> distance_to_code (<span class="keyword">const</span> uint8_t *code)<span class="keyword"> const override </span>{</div>
<div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span> *yj = (<span class="keywordtype">float</span>*)code;</div>
<div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        <span class="keywordtype">float</span> dis = metric == METRIC_INNER_PRODUCT ?</div>
<div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;            fvec_inner_product (xi, yj, d) : <a class="code" href="namespacefaiss.html#a7466bd32de31640860393a701eaac5ad">fvec_L2sqr</a> (xi, yj, d);</div>
<div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        <span class="keywordflow">return</span> dis;</div>
<div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;    }</div>
<div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;</div>
<div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;    <span class="keywordtype">size_t</span> scan_codes (<span class="keywordtype">size_t</span> list_size,</div>
<div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;                       <span class="keyword">const</span> uint8_t *codes,</div>
<div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;                       <span class="keyword">const</span> idx_t *ids,</div>
<div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;                       <span class="keywordtype">float</span> *simi, idx_t *idxi,</div>
<div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;                       <span class="keywordtype">size_t</span> k)<span class="keyword"> const override</span></div>
<div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="keyword">    </span>{</div>
<div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span> *list_vecs = (<span class="keyword">const</span> <span class="keywordtype">float</span>*)codes;</div>
<div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;        <span class="keywordtype">size_t</span> nup = 0;</div>
<div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> j = 0; j &lt; list_size; j++) {</div>
<div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> * yj = list_vecs + d * j;</div>
<div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;            <span class="keywordtype">float</span> dis = metric == METRIC_INNER_PRODUCT ?</div>
<div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;                fvec_inner_product (xi, yj, d) : <a class="code" href="namespacefaiss.html#a7466bd32de31640860393a701eaac5ad">fvec_L2sqr</a> (xi, yj, d);</div>
<div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;            <span class="keywordflow">if</span> (C::cmp (simi[0], dis)) {</div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;                heap_pop&lt;C&gt; (k, simi, idxi);</div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;                <span class="keywordtype">long</span> <span class="keywordtype">id</span> = store_pairs ? (list_no &lt;&lt; 32 | j) : ids[j];</div>
<div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;                heap_push&lt;C&gt; (k, simi, idxi, dis, id);</div>
<div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;                nup++;</div>
<div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;            }</div>
<div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;        }</div>
<div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        <span class="keywordflow">return</span> nup;</div>
<div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;    }</div>
<div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;</div>
<div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    <span class="keywordtype">void</span> scan_codes_range (<span class="keywordtype">size_t</span> list_size,</div>
<div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;                           <span class="keyword">const</span> uint8_t *codes,</div>
<div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;                           <span class="keyword">const</span> idx_t *ids,</div>
<div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;                           <span class="keywordtype">float</span> radius,</div>
<div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;                           RangeQueryResult &amp; res)<span class="keyword"> const override</span></div>
<div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;<span class="keyword">    </span>{</div>
<div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span> *list_vecs = (<span class="keyword">const</span> <span class="keywordtype">float</span>*)codes;</div>
<div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> j = 0; j &lt; list_size; j++) {</div>
<div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;            <span class="keyword">const</span> <span class="keywordtype">float</span> * yj = list_vecs + d * j;</div>
<div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;            <span class="keywordtype">float</span> dis = metric == METRIC_INNER_PRODUCT ?</div>
<div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;                fvec_inner_product (xi, yj, d) : <a class="code" href="namespacefaiss.html#a7466bd32de31640860393a701eaac5ad">fvec_L2sqr</a> (xi, yj, d);</div>
<div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;            <span class="keywordflow">if</span> (C::cmp (radius, dis)) {</div>
<div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;                <span class="keywordtype">long</span> <span class="keywordtype">id</span> = store_pairs ? (list_no &lt;&lt; 32 | j) : ids[j];</div>
<div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;                res.add (dis, <span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;            }</div>
<div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;        }</div>
<div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;    }</div>
<div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;</div>
<div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;</div>
<div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;};</div>
<div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;</div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;</div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;} <span class="comment">// anonymous namespace</span></div>
<div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;InvertedListScanner* <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a05cbcc239916559b29b1eb1943b00440">IndexIVFFlat::get_InvertedListScanner</a></div>
<div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html#a05cbcc239916559b29b1eb1943b00440">  166</a></span>&#160;     (<span class="keywordtype">bool</span> store_pairs) <span class="keyword">const</span></div>
<div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;{</div>
<div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;    <span class="keywordflow">if</span> (metric_type == METRIC_INNER_PRODUCT) {</div>
<div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;        <span class="keywordflow">if</span> (store_pairs) {</div>
<div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">new</span> IVFFlatScanner&lt;</div>
<div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;                METRIC_INNER_PRODUCT, <span class="keyword">true</span>, <a class="code" href="structfaiss_1_1CMin.html">CMin&lt;float, long&gt;</a> &gt; (d);</div>
<div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">new</span> IVFFlatScanner&lt;</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                METRIC_INNER_PRODUCT, <span class="keyword">false</span>, <a class="code" href="structfaiss_1_1CMin.html">CMin&lt;float, long&gt;</a> &gt;(d);</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;        }</div>
<div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;    } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (metric_type == METRIC_L2) {</div>
<div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;        <span class="keywordflow">if</span> (store_pairs) {</div>
<div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">new</span> IVFFlatScanner&lt;</div>
<div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;                METRIC_L2, <span class="keyword">true</span>, <a class="code" href="structfaiss_1_1CMax.html">CMax&lt;float, long&gt;</a> &gt; (d);</div>
<div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">new</span> IVFFlatScanner&lt;</div>
<div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;                METRIC_L2, <span class="keyword">false</span>, <a class="code" href="structfaiss_1_1CMax.html">CMax&lt;float, long&gt;</a> &gt;(d);</div>
<div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;        }</div>
<div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;    }</div>
<div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;    <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div>
<div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;}</div>
<div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;</div>
<div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;</div>
<div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;</div>
<div class="line"><a name="l00190"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html#a2adc0b0002c32ddc01aec4ab96dd659f">  190</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a2adc0b0002c32ddc01aec4ab96dd659f">IndexIVFFlat::update_vectors</a> (<span class="keywordtype">int</span> n, <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> *new_ids, <span class="keyword">const</span> <span class="keywordtype">float</span> *x)</div>
<div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;{</div>
<div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div>
<div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;    FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">maintain_direct_map</a>);</div>
<div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;    FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;    std::vector&lt;idx_t&gt; <a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a> (n);</div>
<div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;    <a class="code" href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">quantizer</a>-&gt;<a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a> (n, x, assign.data());</div>
<div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;</div>
<div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;        <a class="code" href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">idx_t</a> <span class="keywordtype">id</span> = new_ids[i];</div>
<div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;        FAISS_THROW_IF_NOT_MSG (0 &lt;= <span class="keywordtype">id</span> &amp;&amp; <span class="keywordtype">id</span> &lt; <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a>,</div>
<div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;                                <span class="stringliteral">&quot;id to update out of range&quot;</span>);</div>
<div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;        { <span class="comment">// remove old one</span></div>
<div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;            <span class="keywordtype">long</span> dm = direct_map[id];</div>
<div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;            <span class="keywordtype">long</span> ofs = dm &amp; 0xffffffff;</div>
<div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;            <span class="keywordtype">long</span> il = dm &gt;&gt; 32;</div>
<div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;            <span class="keywordtype">size_t</span> l = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">list_size</a> (il);</div>
<div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;            <span class="keywordflow">if</span> (ofs != l - 1) { <span class="comment">// move l - 1 to ofs</span></div>
<div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;                <span class="keywordtype">long</span> id2 = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a21b52cdb0601cd225bd7924932310876">get_single_id</a> (il, l - 1);</div>
<div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;                direct_map[id2] = (il &lt;&lt; 32) | ofs;</div>
<div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;                <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;update_entry (il, ofs, id2,</div>
<div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;                                        <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#afc2760bed7c210f2fad9b03109f561ee">get_single_code</a> (il, l - 1));</div>
<div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;            }</div>
<div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;resize (il, l - 1);</div>
<div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;        }</div>
<div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;        { <span class="comment">// insert new one</span></div>
<div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;            <span class="keywordtype">long</span> il = assign[i];</div>
<div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;            <span class="keywordtype">size_t</span> l = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">list_size</a> (il);</div>
<div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;            <span class="keywordtype">long</span> dm = (il &lt;&lt; 32) | l;</div>
<div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;            direct_map[id] = dm;</div>
<div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#acd3e36cc06fc49e02773e403a84dba95">add_entry</a> (il, <span class="keywordtype">id</span>, (<span class="keyword">const</span> uint8_t*)(x + i * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>));</div>
<div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;        }</div>
<div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    }</div>
<div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;</div>
<div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;}</div>
<div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;</div>
<div class="line"><a name="l00226"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlat.html#a1267faf361fc3831ddafe7abc51f0ba2">  226</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlat.html#a1267faf361fc3831ddafe7abc51f0ba2">IndexIVFFlat::reconstruct_from_offset</a> (<span class="keywordtype">long</span> list_no, <span class="keywordtype">long</span> offset,</div>
<div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;                                            <span class="keywordtype">float</span>* recons)<span class="keyword"> const</span></div>
<div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;    memcpy (recons, <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#afc2760bed7c210f2fad9b03109f561ee">get_single_code</a> (list_no, offset), <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>);</div>
<div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;}</div>
<div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;</div>
<div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;<span class="comment">/*****************************************</span></div>
<div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="comment"> * IndexIVFFlatDedup implementation</span></div>
<div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;<span class="comment"> ******************************************/</span></div>
<div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;</div>
<div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;IndexIVFFlatDedup::IndexIVFFlatDedup (</div>
<div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;            <a class="code" href="structfaiss_1_1Index.html">Index</a> * quantizer, <span class="keywordtype">size_t</span> d, <span class="keywordtype">size_t</span> nlist_,</div>
<div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;            <a class="code" href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">MetricType</a> metric_type):</div>
<div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlat.html">IndexIVFFlat</a> (quantizer, d, nlist_, metric_type)</div>
<div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;{}</div>
<div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;</div>
<div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;</div>
<div class="line"><a name="l00243"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#a24002a8c3f12aa2784833c14b13b427e">  243</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a24002a8c3f12aa2784833c14b13b427e">IndexIVFFlatDedup::train</a>(idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span>* x)</div>
<div class="line"><a name="l00244"></a><span class="lineno">  244</span>&#160;{</div>
<div class="line"><a name="l00245"></a><span class="lineno">  245</span>&#160;    std::unordered_map&lt;uint64_t, idx_t&gt; map;</div>
<div class="line"><a name="l00246"></a><span class="lineno">  246</span>&#160;    <span class="keywordtype">float</span> * x2 = <span class="keyword">new</span> <span class="keywordtype">float</span> [n * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>];</div>
<div class="line"><a name="l00247"></a><span class="lineno">  247</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;float&gt;</a> del (x2);</div>
<div class="line"><a name="l00248"></a><span class="lineno">  248</span>&#160;</div>
<div class="line"><a name="l00249"></a><span class="lineno">  249</span>&#160;    <span class="keywordtype">long</span> n2 = 0;</div>
<div class="line"><a name="l00250"></a><span class="lineno">  250</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00251"></a><span class="lineno">  251</span>&#160;        uint64_t hash = <a class="code" href="namespacefaiss.html#abefd45801bab63d2eb71005ad7a51d32">hash_bytes</a>((uint8_t *)(x + i * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>), <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>);</div>
<div class="line"><a name="l00252"></a><span class="lineno">  252</span>&#160;        <span class="keywordflow">if</span> (map.count(hash) &amp;&amp;</div>
<div class="line"><a name="l00253"></a><span class="lineno">  253</span>&#160;            !memcmp (x2 + map[hash] * d, x + i * d, <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>)) {</div>
<div class="line"><a name="l00254"></a><span class="lineno">  254</span>&#160;            <span class="comment">// is duplicate, skip</span></div>
<div class="line"><a name="l00255"></a><span class="lineno">  255</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00256"></a><span class="lineno">  256</span>&#160;            map [hash] = n2;</div>
<div class="line"><a name="l00257"></a><span class="lineno">  257</span>&#160;            memcpy (x2 + n2 * d, x + i * d, <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>);</div>
<div class="line"><a name="l00258"></a><span class="lineno">  258</span>&#160;            n2 ++;</div>
<div class="line"><a name="l00259"></a><span class="lineno">  259</span>&#160;        }</div>
<div class="line"><a name="l00260"></a><span class="lineno">  260</span>&#160;    }</div>
<div class="line"><a name="l00261"></a><span class="lineno">  261</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00262"></a><span class="lineno">  262</span>&#160;        printf (<span class="stringliteral">&quot;IndexIVFFlatDedup::train: train on %ld points after dedup &quot;</span></div>
<div class="line"><a name="l00263"></a><span class="lineno">  263</span>&#160;                <span class="stringliteral">&quot;(was %ld points)\n&quot;</span>, n2, n);</div>
<div class="line"><a name="l00264"></a><span class="lineno">  264</span>&#160;    }</div>
<div class="line"><a name="l00265"></a><span class="lineno">  265</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">IndexIVFFlat::train</a> (n2, x2);</div>
<div class="line"><a name="l00266"></a><span class="lineno">  266</span>&#160;}</div>
<div class="line"><a name="l00267"></a><span class="lineno">  267</span>&#160;</div>
<div class="line"><a name="l00268"></a><span class="lineno">  268</span>&#160;</div>
<div class="line"><a name="l00269"></a><span class="lineno">  269</span>&#160;</div>
<div class="line"><a name="l00270"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#ae1d5f41f4987f4e02938738436f082bf">  270</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#ae1d5f41f4987f4e02938738436f082bf">IndexIVFFlatDedup::add_with_ids</a>(</div>
<div class="line"><a name="l00271"></a><span class="lineno">  271</span>&#160;           idx_t na, <span class="keyword">const</span> <span class="keywordtype">float</span>* x, <span class="keyword">const</span> <span class="keywordtype">long</span>* xids)</div>
<div class="line"><a name="l00272"></a><span class="lineno">  272</span>&#160;{</div>
<div class="line"><a name="l00273"></a><span class="lineno">  273</span>&#160;</div>
<div class="line"><a name="l00274"></a><span class="lineno">  274</span>&#160;    FAISS_THROW_IF_NOT (<a class="code" href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">is_trained</a>);</div>
<div class="line"><a name="l00275"></a><span class="lineno">  275</span>&#160;    assert (<a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>);</div>
<div class="line"><a name="l00276"></a><span class="lineno">  276</span>&#160;    FAISS_THROW_IF_NOT_MSG (</div>
<div class="line"><a name="l00277"></a><span class="lineno">  277</span>&#160;           !<a class="code" href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">maintain_direct_map</a>,</div>
<div class="line"><a name="l00278"></a><span class="lineno">  278</span>&#160;           <span class="stringliteral">&quot;IVFFlatDedup not implemented with direct_map&quot;</span>);</div>
<div class="line"><a name="l00279"></a><span class="lineno">  279</span>&#160;    <span class="keywordtype">long</span> * idx = <span class="keyword">new</span> <span class="keywordtype">long</span> [na];</div>
<div class="line"><a name="l00280"></a><span class="lineno">  280</span>&#160;    <a class="code" href="structfaiss_1_1ScopeDeleter.html">ScopeDeleter&lt;long&gt;</a> del (idx);</div>
<div class="line"><a name="l00281"></a><span class="lineno">  281</span>&#160;    <a class="code" href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">quantizer</a>-&gt;<a class="code" href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">assign</a> (na, x, idx);</div>
<div class="line"><a name="l00282"></a><span class="lineno">  282</span>&#160;</div>
<div class="line"><a name="l00283"></a><span class="lineno">  283</span>&#160;    <span class="keywordtype">long</span> n_add = 0, n_dup = 0;</div>
<div class="line"><a name="l00284"></a><span class="lineno">  284</span>&#160;    <span class="comment">// TODO make a omp loop with this</span></div>
<div class="line"><a name="l00285"></a><span class="lineno">  285</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i &lt; na; i++) {</div>
<div class="line"><a name="l00286"></a><span class="lineno">  286</span>&#160;        idx_t <span class="keywordtype">id</span> = xids ? xids[i] : <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> + i;</div>
<div class="line"><a name="l00287"></a><span class="lineno">  287</span>&#160;        <span class="keywordtype">long</span> list_no = idx [i];</div>
<div class="line"><a name="l00288"></a><span class="lineno">  288</span>&#160;</div>
<div class="line"><a name="l00289"></a><span class="lineno">  289</span>&#160;        <span class="keywordflow">if</span> (list_no &lt; 0) {</div>
<div class="line"><a name="l00290"></a><span class="lineno">  290</span>&#160;            <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00291"></a><span class="lineno">  291</span>&#160;        }</div>
<div class="line"><a name="l00292"></a><span class="lineno">  292</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span> *xi = x + i * <a class="code" href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">d</a>;</div>
<div class="line"><a name="l00293"></a><span class="lineno">  293</span>&#160;</div>
<div class="line"><a name="l00294"></a><span class="lineno">  294</span>&#160;        <span class="comment">// search if there is already an entry with that id</span></div>
<div class="line"><a name="l00295"></a><span class="lineno">  295</span>&#160;        <a class="code" href="structfaiss_1_1InvertedLists_1_1ScopedCodes.html">InvertedLists::ScopedCodes</a> codes (<a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>, list_no);</div>
<div class="line"><a name="l00296"></a><span class="lineno">  296</span>&#160;</div>
<div class="line"><a name="l00297"></a><span class="lineno">  297</span>&#160;        <span class="keywordtype">long</span> n = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">list_size</a> (list_no);</div>
<div class="line"><a name="l00298"></a><span class="lineno">  298</span>&#160;        <span class="keywordtype">long</span> offset = -1;</div>
<div class="line"><a name="l00299"></a><span class="lineno">  299</span>&#160;        <span class="keywordflow">for</span> (<span class="keywordtype">long</span> o = 0; o &lt; n; o++) {</div>
<div class="line"><a name="l00300"></a><span class="lineno">  300</span>&#160;            <span class="keywordflow">if</span> (!memcmp (codes.get() + o * <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>,</div>
<div class="line"><a name="l00301"></a><span class="lineno">  301</span>&#160;                         xi, <a class="code" href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">code_size</a>)) {</div>
<div class="line"><a name="l00302"></a><span class="lineno">  302</span>&#160;                offset = o;</div>
<div class="line"><a name="l00303"></a><span class="lineno">  303</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00304"></a><span class="lineno">  304</span>&#160;            }</div>
<div class="line"><a name="l00305"></a><span class="lineno">  305</span>&#160;        }</div>
<div class="line"><a name="l00306"></a><span class="lineno">  306</span>&#160;</div>
<div class="line"><a name="l00307"></a><span class="lineno">  307</span>&#160;        <span class="keywordflow">if</span> (offset == -1) { <span class="comment">// not found</span></div>
<div class="line"><a name="l00308"></a><span class="lineno">  308</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#acd3e36cc06fc49e02773e403a84dba95">add_entry</a> (list_no, <span class="keywordtype">id</span>, (<span class="keyword">const</span> uint8_t*) xi);</div>
<div class="line"><a name="l00309"></a><span class="lineno">  309</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00310"></a><span class="lineno">  310</span>&#160;            <span class="comment">// mark equivalence</span></div>
<div class="line"><a name="l00311"></a><span class="lineno">  311</span>&#160;            idx_t id2 = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a21b52cdb0601cd225bd7924932310876">get_single_id</a> (list_no, offset);</div>
<div class="line"><a name="l00312"></a><span class="lineno">  312</span>&#160;            std::pair&lt;idx_t, idx_t&gt; pair (id2, <span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00313"></a><span class="lineno">  313</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.insert (pair);</div>
<div class="line"><a name="l00314"></a><span class="lineno">  314</span>&#160;            n_dup ++;</div>
<div class="line"><a name="l00315"></a><span class="lineno">  315</span>&#160;        }</div>
<div class="line"><a name="l00316"></a><span class="lineno">  316</span>&#160;        n_add++;</div>
<div class="line"><a name="l00317"></a><span class="lineno">  317</span>&#160;    }</div>
<div class="line"><a name="l00318"></a><span class="lineno">  318</span>&#160;    <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">verbose</a>) {</div>
<div class="line"><a name="l00319"></a><span class="lineno">  319</span>&#160;        printf(<span class="stringliteral">&quot;IndexIVFFlat::add_with_ids: added %ld / %ld vectors&quot;</span></div>
<div class="line"><a name="l00320"></a><span class="lineno">  320</span>&#160;               <span class="stringliteral">&quot; (out of which %ld are duplicates)\n&quot;</span>,</div>
<div class="line"><a name="l00321"></a><span class="lineno">  321</span>&#160;               n_add, na, n_dup);</div>
<div class="line"><a name="l00322"></a><span class="lineno">  322</span>&#160;    }</div>
<div class="line"><a name="l00323"></a><span class="lineno">  323</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> += n_add;</div>
<div class="line"><a name="l00324"></a><span class="lineno">  324</span>&#160;}</div>
<div class="line"><a name="l00325"></a><span class="lineno">  325</span>&#160;</div>
<div class="line"><a name="l00326"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#a88f84494a02e8ceab79982bcbcab4fa5">  326</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a88f84494a02e8ceab79982bcbcab4fa5">IndexIVFFlatDedup::search_preassigned</a> (</div>
<div class="line"><a name="l00327"></a><span class="lineno">  327</span>&#160;           idx_t n, <span class="keyword">const</span> <span class="keywordtype">float</span> *x, idx_t k,</div>
<div class="line"><a name="l00328"></a><span class="lineno">  328</span>&#160;           <span class="keyword">const</span> idx_t *assign,</div>
<div class="line"><a name="l00329"></a><span class="lineno">  329</span>&#160;           <span class="keyword">const</span> <span class="keywordtype">float</span> *centroid_dis,</div>
<div class="line"><a name="l00330"></a><span class="lineno">  330</span>&#160;           <span class="keywordtype">float</span> *distances, idx_t *labels,</div>
<div class="line"><a name="l00331"></a><span class="lineno">  331</span>&#160;           <span class="keywordtype">bool</span> store_pairs,</div>
<div class="line"><a name="l00332"></a><span class="lineno">  332</span>&#160;           <span class="keyword">const</span> <a class="code" href="structfaiss_1_1IVFSearchParameters.html">IVFSearchParameters</a> *params)<span class="keyword"> const</span></div>
<div class="line"><a name="l00333"></a><span class="lineno">  333</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00334"></a><span class="lineno">  334</span>&#160;    FAISS_THROW_IF_NOT_MSG (</div>
<div class="line"><a name="l00335"></a><span class="lineno">  335</span>&#160;           !store_pairs, <span class="stringliteral">&quot;store_pairs not supported in IVFDedup&quot;</span>);</div>
<div class="line"><a name="l00336"></a><span class="lineno">  336</span>&#160;</div>
<div class="line"><a name="l00337"></a><span class="lineno">  337</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVF.html#a7cf3a1963394f87d61913420a66eb468">IndexIVFFlat::search_preassigned</a> (n, x, k, assign, centroid_dis,</div>
<div class="line"><a name="l00338"></a><span class="lineno">  338</span>&#160;                                      distances, labels, <span class="keyword">false</span>,</div>
<div class="line"><a name="l00339"></a><span class="lineno">  339</span>&#160;                                      params);</div>
<div class="line"><a name="l00340"></a><span class="lineno">  340</span>&#160;</div>
<div class="line"><a name="l00341"></a><span class="lineno">  341</span>&#160;    std::vector &lt;idx_t&gt; labels2 (k);</div>
<div class="line"><a name="l00342"></a><span class="lineno">  342</span>&#160;    std::vector &lt;float&gt; dis2 (k);</div>
<div class="line"><a name="l00343"></a><span class="lineno">  343</span>&#160;</div>
<div class="line"><a name="l00344"></a><span class="lineno">  344</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; n; i++) {</div>
<div class="line"><a name="l00345"></a><span class="lineno">  345</span>&#160;        idx_t *labels1 = labels + i * k;</div>
<div class="line"><a name="l00346"></a><span class="lineno">  346</span>&#160;        <span class="keywordtype">float</span> *dis1 = distances + i * k;</div>
<div class="line"><a name="l00347"></a><span class="lineno">  347</span>&#160;        <span class="keywordtype">long</span> j = 0;</div>
<div class="line"><a name="l00348"></a><span class="lineno">  348</span>&#160;        <span class="keywordflow">for</span> (; j &lt; k; j++) {</div>
<div class="line"><a name="l00349"></a><span class="lineno">  349</span>&#160;            <span class="keywordflow">if</span> (<a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.find (labels1[j]) != <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.end ()) {</div>
<div class="line"><a name="l00350"></a><span class="lineno">  350</span>&#160;                <span class="comment">// a duplicate: special handling</span></div>
<div class="line"><a name="l00351"></a><span class="lineno">  351</span>&#160;                <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00352"></a><span class="lineno">  352</span>&#160;            }</div>
<div class="line"><a name="l00353"></a><span class="lineno">  353</span>&#160;        }</div>
<div class="line"><a name="l00354"></a><span class="lineno">  354</span>&#160;        <span class="keywordflow">if</span> (j &lt; k) {</div>
<div class="line"><a name="l00355"></a><span class="lineno">  355</span>&#160;            <span class="comment">// there are duplicates, special handling</span></div>
<div class="line"><a name="l00356"></a><span class="lineno">  356</span>&#160;            <span class="keywordtype">long</span> j0 = j;</div>
<div class="line"><a name="l00357"></a><span class="lineno">  357</span>&#160;            <span class="keywordtype">long</span> rp = j;</div>
<div class="line"><a name="l00358"></a><span class="lineno">  358</span>&#160;            <span class="keywordflow">while</span> (j &lt; k) {</div>
<div class="line"><a name="l00359"></a><span class="lineno">  359</span>&#160;                <span class="keyword">auto</span> range = <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.equal_range (labels1[rp]);</div>
<div class="line"><a name="l00360"></a><span class="lineno">  360</span>&#160;                <span class="keywordtype">float</span> dis = dis1[rp];</div>
<div class="line"><a name="l00361"></a><span class="lineno">  361</span>&#160;                labels2[j] = labels1[rp];</div>
<div class="line"><a name="l00362"></a><span class="lineno">  362</span>&#160;                dis2[j] = dis;</div>
<div class="line"><a name="l00363"></a><span class="lineno">  363</span>&#160;                j ++;</div>
<div class="line"><a name="l00364"></a><span class="lineno">  364</span>&#160;                <span class="keywordflow">for</span> (<span class="keyword">auto</span> it = range.first; j &lt; k &amp;&amp; it != range.second; ++it) {</div>
<div class="line"><a name="l00365"></a><span class="lineno">  365</span>&#160;                    labels2[j] = it-&gt;second;</div>
<div class="line"><a name="l00366"></a><span class="lineno">  366</span>&#160;                    dis2[j] = dis;</div>
<div class="line"><a name="l00367"></a><span class="lineno">  367</span>&#160;                    j++;</div>
<div class="line"><a name="l00368"></a><span class="lineno">  368</span>&#160;                }</div>
<div class="line"><a name="l00369"></a><span class="lineno">  369</span>&#160;                rp++;</div>
<div class="line"><a name="l00370"></a><span class="lineno">  370</span>&#160;            }</div>
<div class="line"><a name="l00371"></a><span class="lineno">  371</span>&#160;            memcpy (labels1 + j0, labels2.data() + j0,</div>
<div class="line"><a name="l00372"></a><span class="lineno">  372</span>&#160;                    <span class="keyword">sizeof</span>(labels1[0]) * (k - j0));</div>
<div class="line"><a name="l00373"></a><span class="lineno">  373</span>&#160;            memcpy (dis1 + j0, dis2.data() + j0,</div>
<div class="line"><a name="l00374"></a><span class="lineno">  374</span>&#160;                    <span class="keyword">sizeof</span>(dis2[0]) * (k - j0));</div>
<div class="line"><a name="l00375"></a><span class="lineno">  375</span>&#160;        }</div>
<div class="line"><a name="l00376"></a><span class="lineno">  376</span>&#160;    }</div>
<div class="line"><a name="l00377"></a><span class="lineno">  377</span>&#160;</div>
<div class="line"><a name="l00378"></a><span class="lineno">  378</span>&#160;}</div>
<div class="line"><a name="l00379"></a><span class="lineno">  379</span>&#160;</div>
<div class="line"><a name="l00380"></a><span class="lineno">  380</span>&#160;</div>
<div class="line"><a name="l00381"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#aae53833bb1e4041358cd4e5407d6a296">  381</a></span>&#160;<span class="keywordtype">long</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#aae53833bb1e4041358cd4e5407d6a296">IndexIVFFlatDedup::remove_ids</a>(<span class="keyword">const</span> <a class="code" href="structfaiss_1_1IDSelector.html">IDSelector</a>&amp; sel)</div>
<div class="line"><a name="l00382"></a><span class="lineno">  382</span>&#160;{</div>
<div class="line"><a name="l00383"></a><span class="lineno">  383</span>&#160;    std::unordered_map&lt;idx_t, idx_t&gt; replace;</div>
<div class="line"><a name="l00384"></a><span class="lineno">  384</span>&#160;    std::vector&lt;std::pair&lt;idx_t, idx_t&gt; &gt; toadd;</div>
<div class="line"><a name="l00385"></a><span class="lineno">  385</span>&#160;    <span class="keywordflow">for</span> (<span class="keyword">auto</span> it = <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.begin(); it != <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.end(); ) {</div>
<div class="line"><a name="l00386"></a><span class="lineno">  386</span>&#160;        <span class="keywordflow">if</span> (sel.is_member(it-&gt;first)) {</div>
<div class="line"><a name="l00387"></a><span class="lineno">  387</span>&#160;            <span class="comment">// then we erase this entry</span></div>
<div class="line"><a name="l00388"></a><span class="lineno">  388</span>&#160;            <span class="keywordflow">if</span> (!sel.is_member(it-&gt;second)) {</div>
<div class="line"><a name="l00389"></a><span class="lineno">  389</span>&#160;                <span class="comment">// if the second is not erased</span></div>
<div class="line"><a name="l00390"></a><span class="lineno">  390</span>&#160;                <span class="keywordflow">if</span> (replace.count(it-&gt;first) == 0) {</div>
<div class="line"><a name="l00391"></a><span class="lineno">  391</span>&#160;                    replace[it-&gt;first] = it-&gt;second;</div>
<div class="line"><a name="l00392"></a><span class="lineno">  392</span>&#160;                } <span class="keywordflow">else</span> { <span class="comment">// remember we should add an element</span></div>
<div class="line"><a name="l00393"></a><span class="lineno">  393</span>&#160;                    std::pair&lt;idx_t, idx_t&gt; new_entry (</div>
<div class="line"><a name="l00394"></a><span class="lineno">  394</span>&#160;                          replace[it-&gt;first], it-&gt;second);</div>
<div class="line"><a name="l00395"></a><span class="lineno">  395</span>&#160;                    toadd.push_back(new_entry);</div>
<div class="line"><a name="l00396"></a><span class="lineno">  396</span>&#160;                }</div>
<div class="line"><a name="l00397"></a><span class="lineno">  397</span>&#160;            }</div>
<div class="line"><a name="l00398"></a><span class="lineno">  398</span>&#160;            it = <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.erase(it);</div>
<div class="line"><a name="l00399"></a><span class="lineno">  399</span>&#160;        } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00400"></a><span class="lineno">  400</span>&#160;            <span class="keywordflow">if</span> (sel.is_member(it-&gt;second)) {</div>
<div class="line"><a name="l00401"></a><span class="lineno">  401</span>&#160;                it = <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.erase(it);</div>
<div class="line"><a name="l00402"></a><span class="lineno">  402</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00403"></a><span class="lineno">  403</span>&#160;                ++it;</div>
<div class="line"><a name="l00404"></a><span class="lineno">  404</span>&#160;            }</div>
<div class="line"><a name="l00405"></a><span class="lineno">  405</span>&#160;        }</div>
<div class="line"><a name="l00406"></a><span class="lineno">  406</span>&#160;    }</div>
<div class="line"><a name="l00407"></a><span class="lineno">  407</span>&#160;</div>
<div class="line"><a name="l00408"></a><span class="lineno">  408</span>&#160;    <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">instances</a>.insert (toadd.begin(), toadd.end());</div>
<div class="line"><a name="l00409"></a><span class="lineno">  409</span>&#160;</div>
<div class="line"><a name="l00410"></a><span class="lineno">  410</span>&#160;    <span class="comment">// mostly copied from IndexIVF.cpp</span></div>
<div class="line"><a name="l00411"></a><span class="lineno">  411</span>&#160;</div>
<div class="line"><a name="l00412"></a><span class="lineno">  412</span>&#160;    FAISS_THROW_IF_NOT_MSG (!<a class="code" href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">maintain_direct_map</a>,</div>
<div class="line"><a name="l00413"></a><span class="lineno">  413</span>&#160;                    <span class="stringliteral">&quot;direct map remove not implemented&quot;</span>);</div>
<div class="line"><a name="l00414"></a><span class="lineno">  414</span>&#160;</div>
<div class="line"><a name="l00415"></a><span class="lineno">  415</span>&#160;    std::vector&lt;long&gt; toremove(<a class="code" href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">nlist</a>);</div>
<div class="line"><a name="l00416"></a><span class="lineno">  416</span>&#160;</div>
<div class="line"><a name="l00417"></a><span class="lineno">  417</span>&#160;<span class="preprocessor">#pragma omp parallel for</span></div>
<div class="line"><a name="l00418"></a><span class="lineno">  418</span>&#160;<span class="preprocessor"></span>    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">nlist</a>; i++) {</div>
<div class="line"><a name="l00419"></a><span class="lineno">  419</span>&#160;        <span class="keywordtype">long</span> l0 = <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">list_size</a> (i), l = l0, j = 0;</div>
<div class="line"><a name="l00420"></a><span class="lineno">  420</span>&#160;        <a class="code" href="structfaiss_1_1InvertedLists_1_1ScopedIds.html">InvertedLists::ScopedIds</a> idsi (<a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>, i);</div>
<div class="line"><a name="l00421"></a><span class="lineno">  421</span>&#160;        <span class="keywordflow">while</span> (j &lt; l) {</div>
<div class="line"><a name="l00422"></a><span class="lineno">  422</span>&#160;            <span class="keywordflow">if</span> (sel.is_member (idsi[j])) {</div>
<div class="line"><a name="l00423"></a><span class="lineno">  423</span>&#160;                <span class="keywordflow">if</span> (replace.count(idsi[j]) == 0) {</div>
<div class="line"><a name="l00424"></a><span class="lineno">  424</span>&#160;                    l--;</div>
<div class="line"><a name="l00425"></a><span class="lineno">  425</span>&#160;                    <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;update_entry (</div>
<div class="line"><a name="l00426"></a><span class="lineno">  426</span>&#160;                        i, j,</div>
<div class="line"><a name="l00427"></a><span class="lineno">  427</span>&#160;                        <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a21b52cdb0601cd225bd7924932310876">get_single_id</a> (i, l),</div>
<div class="line"><a name="l00428"></a><span class="lineno">  428</span>&#160;                        <a class="code" href="structfaiss_1_1InvertedLists_1_1ScopedCodes.html">InvertedLists::ScopedCodes</a> (<a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>, i, l).get());</div>
<div class="line"><a name="l00429"></a><span class="lineno">  429</span>&#160;                } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00430"></a><span class="lineno">  430</span>&#160;                    <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;update_entry (</div>
<div class="line"><a name="l00431"></a><span class="lineno">  431</span>&#160;                        i, j,</div>
<div class="line"><a name="l00432"></a><span class="lineno">  432</span>&#160;                        replace[idsi[j]],</div>
<div class="line"><a name="l00433"></a><span class="lineno">  433</span>&#160;                        <a class="code" href="structfaiss_1_1InvertedLists_1_1ScopedCodes.html">InvertedLists::ScopedCodes</a> (<a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>, i, j).<span class="keyword">get</span>());</div>
<div class="line"><a name="l00434"></a><span class="lineno">  434</span>&#160;                    j++;</div>
<div class="line"><a name="l00435"></a><span class="lineno">  435</span>&#160;                }</div>
<div class="line"><a name="l00436"></a><span class="lineno">  436</span>&#160;            } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00437"></a><span class="lineno">  437</span>&#160;                j++;</div>
<div class="line"><a name="l00438"></a><span class="lineno">  438</span>&#160;            }</div>
<div class="line"><a name="l00439"></a><span class="lineno">  439</span>&#160;        }</div>
<div class="line"><a name="l00440"></a><span class="lineno">  440</span>&#160;        toremove[i] = l0 - l;</div>
<div class="line"><a name="l00441"></a><span class="lineno">  441</span>&#160;    }</div>
<div class="line"><a name="l00442"></a><span class="lineno">  442</span>&#160;    <span class="comment">// this will not run well in parallel on ondisk because of possible shrinks</span></div>
<div class="line"><a name="l00443"></a><span class="lineno">  443</span>&#160;    <span class="keywordtype">long</span> nremove = 0;</div>
<div class="line"><a name="l00444"></a><span class="lineno">  444</span>&#160;    <span class="keywordflow">for</span> (<span class="keywordtype">long</span> i = 0; i &lt; <a class="code" href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">nlist</a>; i++) {</div>
<div class="line"><a name="l00445"></a><span class="lineno">  445</span>&#160;        <span class="keywordflow">if</span> (toremove[i] &gt; 0) {</div>
<div class="line"><a name="l00446"></a><span class="lineno">  446</span>&#160;            nremove += toremove[i];</div>
<div class="line"><a name="l00447"></a><span class="lineno">  447</span>&#160;            <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;resize(</div>
<div class="line"><a name="l00448"></a><span class="lineno">  448</span>&#160;                i, <a class="code" href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">invlists</a>-&gt;<a class="code" href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">list_size</a>(i) - toremove[i]);</div>
<div class="line"><a name="l00449"></a><span class="lineno">  449</span>&#160;        }</div>
<div class="line"><a name="l00450"></a><span class="lineno">  450</span>&#160;    }</div>
<div class="line"><a name="l00451"></a><span class="lineno">  451</span>&#160;    <a class="code" href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">ntotal</a> -= nremove;</div>
<div class="line"><a name="l00452"></a><span class="lineno">  452</span>&#160;    <span class="keywordflow">return</span> nremove;</div>
<div class="line"><a name="l00453"></a><span class="lineno">  453</span>&#160;}</div>
<div class="line"><a name="l00454"></a><span class="lineno">  454</span>&#160;</div>
<div class="line"><a name="l00455"></a><span class="lineno">  455</span>&#160;</div>
<div class="line"><a name="l00456"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#acb4f1350039546f5001c5fc36ac0fb2d">  456</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#acb4f1350039546f5001c5fc36ac0fb2d">IndexIVFFlatDedup::range_search</a>(</div>
<div class="line"><a name="l00457"></a><span class="lineno">  457</span>&#160;        idx_t ,</div>
<div class="line"><a name="l00458"></a><span class="lineno">  458</span>&#160;        <span class="keyword">const</span> <span class="keywordtype">float</span>* ,</div>
<div class="line"><a name="l00459"></a><span class="lineno">  459</span>&#160;        <span class="keywordtype">float</span> ,</div>
<div class="line"><a name="l00460"></a><span class="lineno">  460</span>&#160;        <a class="code" href="structfaiss_1_1RangeSearchResult.html">RangeSearchResult</a>* )<span class="keyword"> const</span></div>
<div class="line"><a name="l00461"></a><span class="lineno">  461</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00462"></a><span class="lineno">  462</span>&#160;    FAISS_THROW_MSG (<span class="stringliteral">&quot;not implemented&quot;</span>);</div>
<div class="line"><a name="l00463"></a><span class="lineno">  463</span>&#160;}</div>
<div class="line"><a name="l00464"></a><span class="lineno">  464</span>&#160;</div>
<div class="line"><a name="l00465"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#a0782b04472858d993ad4c0ffc81b1844">  465</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#a0782b04472858d993ad4c0ffc81b1844">IndexIVFFlatDedup::update_vectors</a> (<span class="keywordtype">int</span> , idx_t *, <span class="keyword">const</span> <span class="keywordtype">float</span> *)</div>
<div class="line"><a name="l00466"></a><span class="lineno">  466</span>&#160;{</div>
<div class="line"><a name="l00467"></a><span class="lineno">  467</span>&#160;    FAISS_THROW_MSG (<span class="stringliteral">&quot;not implemented&quot;</span>);</div>
<div class="line"><a name="l00468"></a><span class="lineno">  468</span>&#160;}</div>
<div class="line"><a name="l00469"></a><span class="lineno">  469</span>&#160;</div>
<div class="line"><a name="l00470"></a><span class="lineno">  470</span>&#160;</div>
<div class="line"><a name="l00471"></a><span class="lineno"><a class="line" href="structfaiss_1_1IndexIVFFlatDedup.html#adedda3a8e10704acc5639b7f6aa065f7">  471</a></span>&#160;<span class="keywordtype">void</span> <a class="code" href="structfaiss_1_1IndexIVFFlatDedup.html#adedda3a8e10704acc5639b7f6aa065f7">IndexIVFFlatDedup::reconstruct_from_offset</a> (</div>
<div class="line"><a name="l00472"></a><span class="lineno">  472</span>&#160;         <span class="keywordtype">long</span> , <span class="keywordtype">long</span> ,</div>
<div class="line"><a name="l00473"></a><span class="lineno">  473</span>&#160;         <span class="keywordtype">float</span>* )<span class="keyword"> const</span></div>
<div class="line"><a name="l00474"></a><span class="lineno">  474</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00475"></a><span class="lineno">  475</span>&#160;    FAISS_THROW_MSG (<span class="stringliteral">&quot;not implemented&quot;</span>);</div>
<div class="line"><a name="l00476"></a><span class="lineno">  476</span>&#160;}</div>
<div class="line"><a name="l00477"></a><span class="lineno">  477</span>&#160;</div>
<div class="line"><a name="l00478"></a><span class="lineno">  478</span>&#160;</div>
<div class="line"><a name="l00479"></a><span class="lineno">  479</span>&#160;</div>
<div class="line"><a name="l00480"></a><span class="lineno">  480</span>&#160;</div>
<div class="line"><a name="l00481"></a><span class="lineno">  481</span>&#160;} <span class="comment">// namespace faiss</span></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a24002a8c3f12aa2784833c14b13b427e"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a24002a8c3f12aa2784833c14b13b427e">faiss::IndexIVFFlatDedup::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdoc">also dedups the training set </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00243">IndexIVFFlat.cpp:243</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a7cf3a1963394f87d61913420a66eb468"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a7cf3a1963394f87d61913420a66eb468">faiss::IndexIVF::search_preassigned</a></div><div class="ttdeci">virtual void search_preassigned(idx_t n, const float *x, idx_t k, const idx_t *assign, const float *centroid_dis, float *distances, idx_t *labels, bool store_pairs, const IVFSearchParameters *params=nullptr) const </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00250">IndexIVF.cpp:250</a></div></div>
<div class="ttc" id="namespacefaiss_html_a7466bd32de31640860393a701eaac5ad"><div class="ttname"><a href="namespacefaiss.html#a7466bd32de31640860393a701eaac5ad">faiss::fvec_L2sqr</a></div><div class="ttdeci">float fvec_L2sqr(const float *x, const float *y, size_t d)</div><div class="ttdoc">Squared L2 distance between two vectors. </div><div class="ttdef"><b>Definition:</b> <a href="utils__simd_8cpp_source.html#l00501">utils_simd.cpp:501</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_adedda3a8e10704acc5639b7f6aa065f7"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#adedda3a8e10704acc5639b7f6aa065f7">faiss::IndexIVFFlatDedup::reconstruct_from_offset</a></div><div class="ttdeci">void reconstruct_from_offset(long list_no, long offset, float *recons) const override</div><div class="ttdoc">not implemented </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00471">IndexIVFFlat.cpp:471</a></div></div>
<div class="ttc" id="structfaiss_1_1CMax_html"><div class="ttname"><a href="structfaiss_1_1CMax.html">faiss::CMax</a></div><div class="ttdef"><b>Definition:</b> <a href="Heap_8h_source.html#l00047">Heap.h:47</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a2c445db1ccbad852dad17e60e0fac950"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a2c445db1ccbad852dad17e60e0fac950">faiss::IndexIVFFlat::encode_vectors</a></div><div class="ttdeci">void encode_vectors(idx_t n, const float *x, const idx_t *list_nos, uint8_t *codes) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00082">IndexIVFFlat.cpp:82</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c"><div class="ttname"><a href="structfaiss_1_1Index.html#a8bc5d8d1cd0dd7b34b3c98a9f76b4a9c">faiss::Index::assign</a></div><div class="ttdeci">void assign(idx_t n, const float *x, idx_t *labels, idx_t k=1)</div><div class="ttdef"><b>Definition:</b> <a href="Index_8cpp_source.html#l00034">Index.cpp:34</a></div></div>
<div class="ttc" id="structfaiss_1_1IDSelector_html"><div class="ttname"><a href="structfaiss_1_1IDSelector.html">faiss::IDSelector</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00054">AuxIndexStructures.h:54</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedLists_html_a9bd256053ee360473842105460fe285f"><div class="ttname"><a href="structfaiss_1_1InvertedLists.html#a9bd256053ee360473842105460fe285f">faiss::InvertedLists::list_size</a></div><div class="ttdeci">virtual size_t list_size(size_t list_no) const =0</div><div class="ttdoc">get the size of a list </div></div>
<div class="ttc" id="structfaiss_1_1ScopeDeleter_html"><div class="ttname"><a href="structfaiss_1_1ScopeDeleter.html">faiss::ScopeDeleter</a></div><div class="ttdef"><b>Definition:</b> <a href="FaissException_8h_source.html#l00045">FaissException.h:45</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html">faiss::IndexIVFFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00024">IndexIVFFlat.h:24</a></div></div>
<div class="ttc" id="structfaiss_1_1IVFSearchParameters_html"><div class="ttname"><a href="structfaiss_1_1IVFSearchParameters.html">faiss::IVFSearchParameters</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00060">IndexIVF.h:60</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedLists_html_a21b52cdb0601cd225bd7924932310876"><div class="ttname"><a href="structfaiss_1_1InvertedLists.html#a21b52cdb0601cd225bd7924932310876">faiss::InvertedLists::get_single_id</a></div><div class="ttdeci">virtual idx_t get_single_id(size_t list_no, size_t offset) const </div><div class="ttdef"><b>Definition:</b> <a href="InvertedLists_8cpp_source.html#l00035">InvertedLists.cpp:35</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a2a002388d2c081c2dbab8508dcefe73d"><div class="ttname"><a href="structfaiss_1_1Index.html#a2a002388d2c081c2dbab8508dcefe73d">faiss::Index::d</a></div><div class="ttdeci">int d</div><div class="ttdoc">vector dimension </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00066">Index.h:66</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_ad3f0d3071f987baabbdd3da4500c87ea"><div class="ttname"><a href="structfaiss_1_1Index.html#ad3f0d3071f987baabbdd3da4500c87ea">faiss::Index::idx_t</a></div><div class="ttdeci">long idx_t</div><div class="ttdoc">all indices are this type </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_ae1d5f41f4987f4e02938738436f082bf"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#ae1d5f41f4987f4e02938738436f082bf">faiss::IndexIVFFlatDedup::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdoc">implemented for all IndexIVF* classes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00270">IndexIVFFlat.cpp:270</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a7a1d5eec194db0977b2318c6ed6a2b86"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a7a1d5eec194db0977b2318c6ed6a2b86">faiss::IndexIVF::train</a></div><div class="ttdeci">void train(idx_t n, const float *x) override</div><div class="ttdoc">Trains the quantizer and calls train_residual to train sub-quantizers. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8cpp_source.html#l00688">IndexIVF.cpp:688</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedLists_html_afc2760bed7c210f2fad9b03109f561ee"><div class="ttname"><a href="structfaiss_1_1InvertedLists.html#afc2760bed7c210f2fad9b03109f561ee">faiss::InvertedLists::get_single_code</a></div><div class="ttdeci">virtual const uint8_t * get_single_code(size_t list_no, size_t offset) const </div><div class="ttdef"><b>Definition:</b> <a href="InvertedLists_8cpp_source.html#l00052">InvertedLists.cpp:52</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a88f84494a02e8ceab79982bcbcab4fa5"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a88f84494a02e8ceab79982bcbcab4fa5">faiss::IndexIVFFlatDedup::search_preassigned</a></div><div class="ttdeci">void search_preassigned(idx_t n, const float *x, idx_t k, const idx_t *assign, const float *centroid_dis, float *distances, idx_t *labels, bool store_pairs, const IVFSearchParameters *params=nullptr) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00326">IndexIVFFlat.cpp:326</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a5f7356766632d3ce2838f285aa6b8e76"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a5f7356766632d3ce2838f285aa6b8e76">faiss::IndexIVFFlat::add_with_ids</a></div><div class="ttdeci">void add_with_ids(idx_t n, const float *x, const long *xids) override</div><div class="ttdoc">implemented for all IndexIVF* classes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00036">IndexIVFFlat.cpp:36</a></div></div>
<div class="ttc" id="namespacefaiss_html_abefd45801bab63d2eb71005ad7a51d32"><div class="ttname"><a href="namespacefaiss.html#abefd45801bab63d2eb71005ad7a51d32">faiss::hash_bytes</a></div><div class="ttdeci">uint64_t hash_bytes(const uint8_t *bytes, long n)</div><div class="ttdef"><b>Definition:</b> <a href="utils_8cpp_source.html#l01584">utils.cpp:1584</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedLists_html_acd3e36cc06fc49e02773e403a84dba95"><div class="ttname"><a href="structfaiss_1_1InvertedLists.html#acd3e36cc06fc49e02773e403a84dba95">faiss::InvertedLists::add_entry</a></div><div class="ttdeci">virtual size_t add_entry(size_t list_no, idx_t theid, const uint8_t *code)</div><div class="ttdoc">add one entry to an inverted list </div><div class="ttdef"><b>Definition:</b> <a href="InvertedLists_8cpp_source.html#l00059">InvertedLists.cpp:59</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6970683faa021b7a6f1a0865c0d4eccd"><div class="ttname"><a href="structfaiss_1_1Index.html#a6970683faa021b7a6f1a0865c0d4eccd">faiss::Index::ntotal</a></div><div class="ttdeci">idx_t ntotal</div><div class="ttdoc">total nb of indexed vectors </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00067">Index.h:67</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a5590d847c5c2b958affd2a05e58a6f23"><div class="ttname"><a href="structfaiss_1_1Index.html#a5590d847c5c2b958affd2a05e58a6f23">faiss::Index::verbose</a></div><div class="ttdeci">bool verbose</div><div class="ttdoc">verbosity level </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00068">Index.h:68</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a1267faf361fc3831ddafe7abc51f0ba2"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a1267faf361fc3831ddafe7abc51f0ba2">faiss::IndexIVFFlat::reconstruct_from_offset</a></div><div class="ttdeci">void reconstruct_from_offset(long list_no, long offset, float *recons) const override</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00226">IndexIVFFlat.cpp:226</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a2adc0b0002c32ddc01aec4ab96dd659f"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a2adc0b0002c32ddc01aec4ab96dd659f">faiss::IndexIVFFlat::update_vectors</a></div><div class="ttdeci">virtual void update_vectors(int nv, idx_t *idx, const float *v)</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00190">IndexIVFFlat.cpp:190</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_acb4f1350039546f5001c5fc36ac0fb2d"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#acb4f1350039546f5001c5fc36ac0fb2d">faiss::IndexIVFFlatDedup::range_search</a></div><div class="ttdeci">void range_search(idx_t n, const float *x, float radius, RangeSearchResult *result) const override</div><div class="ttdoc">not implemented </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00456">IndexIVFFlat.cpp:456</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedListScanner_html"><div class="ttname"><a href="structfaiss_1_1InvertedListScanner.html">faiss::InvertedListScanner</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00272">IndexIVF.h:272</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a0782b04472858d993ad4c0ffc81b1844"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a0782b04472858d993ad4c0ffc81b1844">faiss::IndexIVFFlatDedup::update_vectors</a></div><div class="ttdeci">void update_vectors(int nv, idx_t *idx, const float *v) override</div><div class="ttdoc">not implemented </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00465">IndexIVFFlat.cpp:465</a></div></div>
<div class="ttc" id="structfaiss_1_1RangeSearchResult_html"><div class="ttname"><a href="structfaiss_1_1RangeSearchResult.html">faiss::RangeSearchResult</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures_8h_source.html#l00031">AuxIndexStructures.h:31</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_aa0e8fc5e04cbd8e0dde61f98bc7dd0bc"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#aa0e8fc5e04cbd8e0dde61f98bc7dd0bc">faiss::IndexIVF::invlists</a></div><div class="ttdeci">InvertedLists * invlists</div><div class="ttdoc">Acess to the actual data. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00092">IndexIVF.h:92</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00061">Index.h:61</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_a3cf99e2ee92b8558a066f821efab95d5"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#a3cf99e2ee92b8558a066f821efab95d5">faiss::Level1Quantizer::quantizer</a></div><div class="ttdeci">Index * quantizer</div><div class="ttdoc">quantizer that maps vectors to inverted lists </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00032">IndexIVF.h:32</a></div></div>
<div class="ttc" id="structfaiss_1_1Index_html_a6e92732617c4dbe364e7678dd8773a7f"><div class="ttname"><a href="structfaiss_1_1Index.html#a6e92732617c4dbe364e7678dd8773a7f">faiss::Index::is_trained</a></div><div class="ttdeci">bool is_trained</div><div class="ttdoc">set if the Index does not require training, or if training is done already </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00071">Index.h:71</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedLists_1_1ScopedIds_html"><div class="ttname"><a href="structfaiss_1_1InvertedLists_1_1ScopedIds.html">faiss::InvertedLists::ScopedIds</a></div><div class="ttdef"><b>Definition:</b> <a href="InvertedLists_8h_source.html#l00136">InvertedLists.h:136</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_aedd0c14b5654295b291638ec7f9f9517"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#aedd0c14b5654295b291638ec7f9f9517">faiss::IndexIVF::maintain_direct_map</a></div><div class="ttdeci">bool maintain_direct_map</div><div class="ttdoc">map for direct access to the elements. Enables reconstruct(). </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00109">IndexIVF.h:109</a></div></div>
<div class="ttc" id="structfaiss_1_1InvertedLists_1_1ScopedCodes_html"><div class="ttname"><a href="structfaiss_1_1InvertedLists_1_1ScopedCodes.html">faiss::InvertedLists::ScopedCodes</a></div><div class="ttdef"><b>Definition:</b> <a href="InvertedLists_8h_source.html#l00156">InvertedLists.h:156</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_aae53833bb1e4041358cd4e5407d6a296"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#aae53833bb1e4041358cd4e5407d6a296">faiss::IndexIVFFlatDedup::remove_ids</a></div><div class="ttdeci">long remove_ids(const IDSelector &amp;sel) override</div><div class="ttdoc">Dataset manipulation functions. </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00381">IndexIVFFlat.cpp:381</a></div></div>
<div class="ttc" id="structfaiss_1_1Level1Quantizer_html_a1c4fc9d874d9492ee0ea27a5be388fa7"><div class="ttname"><a href="structfaiss_1_1Level1Quantizer.html#a1c4fc9d874d9492ee0ea27a5be388fa7">faiss::Level1Quantizer::nlist</a></div><div class="ttdeci">size_t nlist</div><div class="ttdoc">number of possible key values </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00033">IndexIVF.h:33</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVF_html_a46d1aeddb60643c5b3f096147c3e028f"><div class="ttname"><a href="structfaiss_1_1IndexIVF.html#a46d1aeddb60643c5b3f096147c3e028f">faiss::IndexIVF::code_size</a></div><div class="ttdeci">size_t code_size</div><div class="ttdoc">code size per vector in bytes </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVF_8h_source.html#l00095">IndexIVF.h:95</a></div></div>
<div class="ttc" id="namespacefaiss_html_afd12191c638da74760ff397cf319752c"><div class="ttname"><a href="namespacefaiss.html#afd12191c638da74760ff397cf319752c">faiss::MetricType</a></div><div class="ttdeci">MetricType</div><div class="ttdoc">Some algorithms support both an inner product version and a L2 search version. </div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00044">Index.h:44</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_a05cbcc239916559b29b1eb1943b00440"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#a05cbcc239916559b29b1eb1943b00440">faiss::IndexIVFFlat::get_InvertedListScanner</a></div><div class="ttdeci">InvertedListScanner * get_InvertedListScanner(bool store_pairs) const override</div><div class="ttdoc">get a scanner for this index (store_pairs means ignore labels) </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00166">IndexIVFFlat.cpp:166</a></div></div>
<div class="ttc" id="structfaiss_1_1CMin_html"><div class="ttname"><a href="structfaiss_1_1CMin.html">faiss::CMin</a></div><div class="ttdef"><b>Definition:</b> <a href="Heap_8h_source.html#l00052">Heap.h:52</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlat_html_aea729c3d8c70bdd93f8e413e834851a4"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlat.html#aea729c3d8c70bdd93f8e413e834851a4">faiss::IndexIVFFlat::add_core</a></div><div class="ttdeci">virtual void add_core(idx_t n, const float *x, const long *xids, const long *precomputed_idx)</div><div class="ttdoc">same as add_with_ids, with precomputed coarse quantizer </div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8cpp_source.html#l00041">IndexIVFFlat.cpp:41</a></div></div>
<div class="ttc" id="structfaiss_1_1IndexIVFFlatDedup_html_a1ff220494d504dd806e5daf290ec0e7a"><div class="ttname"><a href="structfaiss_1_1IndexIVFFlatDedup.html#a1ff220494d504dd806e5daf290ec0e7a">faiss::IndexIVFFlatDedup::instances</a></div><div class="ttdeci">std::unordered_multimap&lt; idx_t, idx_t &gt; instances</div><div class="ttdef"><b>Definition:</b> <a href="IndexIVFFlat_8h_source.html#l00067">IndexIVFFlat.h:67</a></div></div>
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